US3140831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trans-illuminated panels
Assignee: Individual
•
Filing: 1955-12-20
•
Granted: 1964-07-14
•
Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 Strange John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:20
CPC Classifications
B; B60; B60Q; B60Q3/00; B60Q3/10; B60Q3/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
A PANEL COMPRISING: A LIGH TRANSMITTING SHEET, A TRANSLUCENT SHEET AFFIXED ON ONE SIDE THEREOF, AN ELECTRICALLY CONDUCTIVE SHEET AFFIXED ON SAID TRANSLUCENT SHEET AND AN OPAQUE COVERING ON SAID ELECTRICALLY CONDUCTIVE SHEET.
References Cited (Backward Citations)
US2587568A
Cited
US2599710A
Cited
US2518726A
Cited
US2695354A
Cited
US2702340A
Cited
US2696550A
Cited
US2772651A
Cited
US2824954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |